def taylor_term(self, n, x, *previous_terms): # of (1+x)**e
if n<0: return S.Zero
x = _sympify(x)
return C.Binomial(self.exp, n) * x**n
def taylor_term(self, n, x, *previous_terms): # of (1+x)**e
if n<0: return S.Zero
x = _sympify(x)
return C.Binomial(self.exp, n) * x**n
